5.56 Model Front Sight Tool 223/5.56 CNC Machined, Mil Spec Tolerances and Materials, Parkerized Finish Hardened 1018 Steel, 34 Rc  these are not Brittle or Soft.. Xtreme Ships the same day, everyday.. Buy 10 get 2 free.. Made in the USA by Xtreme Precision LLC... UPC:735201759210